BACK BAY WILDLIFE REFUGE, VA

Average of Minimum Temperature (Degrees Fahrenheit)

(440385)

File last updated on May 12, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1953	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.10	k	-----	z
1954	34.52		38.25		41.23		51.87		56.74		67.30		70.07	a	70.42		66.17		56.26		43.40		31.45		52.31
1955	30.29		31.50		42.97		50.83	a	59.35		63.67		73.61		73.85	d	69.50		56.48		43.17		31.77		52.25
1956	31.74		38.72		39.23	a	47.70		55.45		67.50		71.45		71.13		65.67		60.24	b	45.21	a	44.61		53.22
1957	33.23		38.68		41.71		52.13		59.68		69.50		70.13		69.77	a	69.97	a	54.10	b	48.57		39.33	a	53.90
1958	30.93	a	28.93		37.68		47.70		58.35		63.80		73.29		71.70	a	64.73		55.80	a	47.87		30.87		50.97
1959	30.17	a	34.79		39.35		50.10		61.00		67.10	a	72.03	a	72.41	b	68.53		59.47	a	45.72	a	38.48		53.26
1960	35.60	a	35.34		32.23		52.53		58.87		67.83		70.77		72.42		68.66	a	56.74		46.33	c	29.94		52.27
1961	29.76	b	35.96	c	42.52	b	-----	z	-----	z	62.17	g	69.95	i	66.52		65.00	n	-----	z	46.92	e	34.46	e	42.69	f
1962	32.59	d	33.00		39.40	f	47.34	a	58.65	h	66.57	g	69.38	b	70.79	c	64.00		57.42		44.43		32.50	a	50.16	c
1963	30.16		28.14		42.55		49.13		54.87		65.93	a	70.13	a	70.19		63.07		56.39		46.87		30.77		50.68
1964	35.61		34.03		42.52		48.33		57.42		66.33		69.13		68.39		65.23		53.94		48.63		40.90		52.54
1965	34.52		31.50		36.48		43.83		57.74		-----	z	68.90		68.45		67.00	a	54.43	a	46.53		37.65		49.73	a
1966	32.23		33.00		41.87		47.53		55.16		63.83		71.10		69.90		65.20		55.71		45.90		35.65		51.42
1967	37.45		33.18		39.06		47.73		50.45		63.20		70.39		69.61		62.10	a	56.39		40.47		38.90		50.75
1968	30.77		29.21		40.84		47.87		56.94		66.47		71.74		72.48		65.63		57.73	a	44.90		33.61		51.52
1969	30.26		33.39		35.97		48.00		57.42		67.83		71.55		69.55		65.23		57.39		42.37		33.39		51.03
1970	26.10	a	33.27	b	38.10	a	48.20		59.18	c	67.66	a	70.63	d	71.07	d	68.79	b	59.55	b	46.71	b	37.37	a	52.22
1971	28.96	d	34.21		39.07	c	47.50	d	57.61	c	69.96	d	72.55	k	70.27	e	68.52	a	62.97	a	43.07	c	44.76	b	51.54	a
1972	38.75	c	34.86		40.77		48.07		57.52		62.23		71.77		70.94		66.43	b	56.19		44.61	b	41.80	a	52.83
1973	34.57	a	32.37	a	42.10	b	49.87		57.17	a	69.10	a	69.33	a	71.13		68.75	b	57.03	b	44.58	d	39.43	a	52.95
1974	41.69	b	37.04	d	42.93	a	49.97		58.54	c	66.25	b	70.55		70.74		66.30		49.77	a	46.00	g	38.07	b	53.80	a
1975	36.97	a	37.16	i	39.59	b	44.19	c	57.45	b	66.00	p	70.64	i	71.18	c	67.11	c	59.10	a	48.68	e	34.85	k	53.03	d
1976	29.68		38.72		44.38	b	48.39	b	55.82	c	64.50	j	67.88	e	66.21	b	62.45	h	50.86	i	33.57	i	28.71	n	50.16	e
1977	21.85	d	31.81	a	42.50	g	52.26	k	57.04	c	62.32	b	71.29		69.37	d	66.84	e	52.53	a	48.38	d	35.16		51.66	b
1978	28.71		25.11		34.65	e	46.07	a	54.30	a	63.42	d	66.85	e	70.19		63.62	d	51.92	f	48.93		38.72	f	50.19	b
1979	33.52	d	25.79		40.77		47.25	b	57.30	a	64.30		70.00		71.10	a	68.30		53.07	b	49.47		38.73	e	51.63
1980	35.20	a	29.30	b	39.43	c	48.67		59.03	a	65.24	a	70.46	e	69.82	c	68.59	a	53.90		42.92	f	36.52	f	53.96	b
1981	23.40	a	20.80	w	39.30	k	49.14	a	55.97		69.90		72.10		69.06		64.10		53.06		42.96	c	33.72	b	53.34	b
1982	28.32	f	35.65	b	39.63	a	45.43	b	59.00	c	65.89	c	71.63	a	69.07	a	63.71	b	54.63	a	48.04	d	41.52	d	54.02	a
1983	34.28	b	34.08	b	42.13	a	46.11	b	56.90	b	64.57		70.36	c	68.77		65.00		55.90	a	41.62	d	37.54	e	51.44
1984	26.64	c	36.12	e	36.72	b	45.14	h	56.73	a	65.83	a	67.42		69.17	a	62.83		58.71		41.34	a	40.60	a	51.10	a
1985	25.23	a	28.44	a	39.22	d	47.82	b	57.31	b	62.69	d	67.19	d	68.03		64.59	a	60.00		54.83		33.55	b	50.74
1986	31.37	a	35.04		38.97	a	47.53		56.79	b	66.30		73.07	a	70.17	b	65.57		58.58	e	48.00	b	37.92	f	53.76	a
1987	33.68	f	29.40	h	37.89	d	46.56	c	56.08	e	66.10	a	70.65		71.17	a	66.73		47.97	a	45.12	e	36.79	c	54.50	b
1988	27.60	a	33.79	a	39.20	f	47.43	b	55.55	i	63.38	d	70.12	f	71.30	h	64.81	c	49.90	k	43.48	i	32.95	j	47.40	g
1989	36.21	l	36.38	g	40.17	h	48.05	j	54.00	j	69.59	h	69.85	k	70.78	h	66.50	j	54.68	l	47.84	k	26.55	k	-----	z
1990	36.29	j	40.68	i	37.86	q	48.18	h	55.48	h	63.38	i	69.24	j	70.09	h	60.11	k	54.31	o	42.28	l	39.25	o	-----	z
1991	35.35	k	34.26	i	42.48	j	47.70	g	60.71	g	65.95	j	72.05	i	69.32	i	64.90	j	50.45	i	44.06	n	33.95	j	-----	z
1992	33.95	i	37.37	j	37.96	e	47.86	h	-----	z	63.36	h	73.42	e	69.57	h	66.81	i	53.14	j	49.53	k	38.67	j	55.69	j
1993	39.22	m	30.19	g	37.48	h	46.33	i	59.35	k	66.32	h	72.89	m	68.78	m	65.81	i	54.35	n	45.45	j	37.24	n	-----	z
1994	29.62	j	32.35	h	41.35	h	51.90	i	55.48	j	68.91	h	72.60	k	67.82	i	62.57	i	49.15	k	46.80	j	41.05	l	-----	z
1995	33.50	k	30.68	i	41.18	i	47.45	j	56.95	j	65.95	h	72.15	k	70.61	h	64.15	j	55.14	j	41.27	o	35.00	t	-----	z
1996	30.19	o	33.39	k	37.80	k	46.36	h	54.45	i	66.25	j	69.00	j	68.09	i	65.10	j	54.86	j	40.89	k	38.75	k	-----	z
1997	35.86	j	41.42	i	43.24	j	44.59	h	53.25	k	62.47	k	70.36	i	67.67	j	61.85	j	51.67	j	39.71	m	35.78	m	-----	z
1998	40.22	m	41.06	l	41.86	j	52.23	h	56.39	m	64.29	i	70.59	i	69.56	o	65.10	i	55.05	l	45.56	l	41.83	m	-----	z
1999	36.76	n	34.50	n	36.24	j	45.93	o	52.89	l	64.50	h	69.68	l	68.86	j	64.89	k	54.08	s	41.00	l	32.95	k	-----	z
2000	25.89	l	34.32	j	39.82	i	44.89	k	56.23	i	64.48	i	67.57	j	69.36	i	62.61	l	55.74	l	39.35	m	34.27	t	-----	z
2001	32.24	j	38.28	j	38.80	k	47.14	i	55.67	j	68.48	i	70.18	n	71.57	h	62.79	k	52.15	k	46.00	j	47.93	p	-----	z
2002	41.29	n	36.12	k	40.43	q	52.00	j	57.56	m	71.82	m	74.77	i	73.00	m	66.94	n	57.65	k	42.25	r	33.33	p	-----	z
2003	29.41	n	32.35	k	39.50	k	45.38	i	56.52	j	67.00	j	71.26	l	69.55	k	66.22	l	-----	z	51.60	o	33.38	o	-----	z
2004	29.29	n	32.83	k	41.00	j	45.62	n	64.55	k	67.88	n	72.37	l	70.14	i	67.95	i	56.06	m	48.17	l	38.81	o	-----	z
2005	34.75	k	35.53	k	36.09	h	49.94	n	53.95	k	68.05	i	74.53	l	72.00	j	69.29	i	58.63	l	47.94	n	32.55	k	-----	z
2006	43.12	o	36.67	s	40.25	s	48.45	s	-----	z	68.46	q	69.00	s	73.26	l	63.78	l	54.21	l	47.00	l	40.00	m	-----	z
2007	32.24	n	30.65	k	43.05	j	48.53	m	54.69	o	69.00		72.87		74.23		70.53		64.97		46.69	a	41.81		62.87	e
2008	35.68		39.18	a	44.94		52.63		58.90		71.50		72.81		72.97		70.30		56.48		44.33		41.35		55.09
2009	32.55		34.64		40.74		51.60		62.42		69.93		71.77		74.55		67.90		57.77		51.77		38.68		54.53
2010	31.10		31.71		43.94		53.63		62.74		73.73		74.32		74.06		69.43		58.00		47.40		30.06		54.18
2011	30.94		36.14		42.61		55.57		62.26		71.53		75.13		73.83	a	69.47		59.61		49.33		43.94		55.86
2012	38.48		38.93		49.69	b	51.77		63.97		68.43		76.32		74.65		68.72	a	58.81		43.77		43.39		56.41
2013	35.97		36.57		37.84		51.53		61.03		70.23		74.13		71.71		66.77		59.55		44.77		39.26		54.11
2014	30.16		34.54		38.13		49.83		62.68		70.27		72.52		72.61		70.73		59.58		42.30		41.10		53.70
2015	33.35		25.44	a	37.97		51.20		62.97		71.70		74.52		72.97		71.93	b	59.14	c	53.13		51.55		55.49
2016	35.19		37.14	a	47.48		50.87		59.48		69.57		75.68		76.29		72.00		62.06		46.50		40.26		56.04
2017	37.65		40.74	a	41.57	a	57.97		61.87		70.17	a	75.21	c	73.42		69.43		62.52		47.90		40.75	k	58.04	a
Period of Record Statistics
MEAN	32.22		33.77		40.37		49.22		58.27		67.11		71.48		71.03		67.01		57.14		46.23		37.81		52.98
S.D.	4.17		3.86		3.25		2.86		2.72		2.95		2.27		2.17		2.53		3.34		3.08		4.80		1.73
SKEW	-0.25		-0.50		0.32		0.75		-0.00		0.12		0.07		0.14		0.06		-0.29		0.52		0.32		0.45
MAX	41.69		40.74		49.69		57.97		63.97		73.73		76.32		76.29		72.00		64.97		54.83		51.55		56.41
MIN	21.85		25.11		32.23		43.83		50.45		62.23		66.85		66.21		62.10		47.97		40.47		29.94		50.68
YRS	43		42		42		42		42		41		43		45		44		42		42		39		28